Triennial
Triennial, from Latin "triennium".
Every decade
The word occurring has three syllables. (Oc-curr-ing)
The word is... bicentennial.
Consecutive.
Biennial means "occurring every two years," OR "lasting for two years." The word biannual can also mean "occurring every two years," although its most common meaning is "occurring twice a year."
enneatical
Biannual. Biannual can mean occurring every two years, OR occurring twice a year. Biennial, on the other hand, means only the former: occurring every two years.
Triennial, from Latin "triennium".
Centenary.
"bi" is prefix meaning every other, but it can be any time period. For example: Biweekly = every other week bimonthly = every other month Biennially = every other year
annual or anniversary
Bientum. Coming for the Latin word "Centum" meaning one hundred.
Biennial is a word describing an event that happens every two years.
Biennial:Occurring every two years. The Legislature meets biennially. NOTE: Biannual means "occurring twice a year."www.leg.state.or.us/glossary.htmlPlant that completes its life cycle in two years and generally flowers in the second yearnaturesnaturals.co.uk/Botanicals+Glossary
Some examples of words that have similar meanings in many languages include "hello," "goodbye," and "thank you." These are often used as common greetings and expressions of gratitude that transcend language barriers.
The word Biennial means Every two years